问题
选择题
Let's start the trip ______ half past eight ______ the morning of February 21.[ ]
A. at; on
B. at; in
C. /; in
D. about; by
答案
答案：A
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Let's start the trip ______ half past eight ______ the morning of February 21.[ ]
A. at; on
B. at; in
C. /; in
D. about; by
答案：A